E2181 Redeclaration of property not allowed in OLE automation section (Delphi)
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It is not allowed to move the visibility of a property into an automated section.
program Produce; type Base = class v : Integer; s : String; protected property Name : String read s write s; property Value : Integer read v write v; end; Derived = class (Base) public property Name; (* Move Name to a public visibility by redeclaration *) automated property Value; end; begin end.
In the above example, Name is moved from a private visibility in Base to public visibility in Derived by redeclaration. The same idea is attempted on Value, but an error results.
program Solve; type Base = class v : Integer; s : String; protected property Name : String read s write s; property Value : Integer read v write v; end; Derived = class (Base) public property Name; (* Move Name to a public visibility by redeclaration *) property Value; automated end; begin end.
It is not possible to change the visibility of a property to an automated section, therefore the solution to this problem is to not redeclare properties of base classes in automated sections.